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Using a sample of 3.8 M (2S) events accumulated with the BES detector, the process (2S) → ϩ Ϫ J/ is studied. The angular distributions are compared with the general decay amplitude analysis of Cahn. We find that the dipion system requires some D wave amplitude, as well as S wave. On the other hand, the J/Ϫ(ϩ Ϫ) relative angular momentum is consistent with being pure S wave. The decay distributions have been fit to heavy quarkonium models, including the Novikov-Shifman model. This model, which is written in terms of the parameter , predicts that D wave pions should be present. We determine ϭ0.183 Ϯ0.002Ϯ0.003 based on the joint m Ϫcos * distribution. The fraction of D wave amplitude as a function of m is found to decrease with increasing m , in agreement with the model. We have also fit the Mannel-Yan model, which is another model that allows D wave pions.

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